Question

Dielectric constant, property of an electrical insulating material (a dielectric) equal to

A

the ratio of the capacitance of a capacitor filled with the given material to the capacitance of an identical capacitor in a vacuum without the dielectric material.

B

the ratio of the capacitance of a capacitor filled with the given material to the capacitance of an identical capacitor in a vacuum with the dielectric material.

C

the capacitance of a capacitor filled with the given material 

D

none  of the above 

Medium
Solution
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Correct option is A)

The capacitance of a parallel plate capacitor filled with the given material of dielectric constant is given by:
              .....................eq1
And the capacitance of the same capacitor without the given material is given by:
               .....................eq2
Dividing eq1 by eq2,
             

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